I just hope your OS is other than Vista series since it has a known problem with this hardware. If on XP download the latest driver from this link: http://www.acer-group.com/public/index/services.htm or http://www.acer.com/worldwide/support/download.htm or http://www.acer.co.uk/acer/service.do?LanguageISOCtxParam=en&miu10einu24.current.attN2B2F2EEF=3734&sp=page15e&ctx2.c2att1=17&miu10ekcond13.attN2B2F2EEF=3734&CountryISOCtxParam=UK&ctx1.att21k=1&CRC=3713735360..................................sodeep

You should have a repair disk for windows, if you do not simplying inserting the operating system disk and it might have a repair selection (I can't tell without knowing a bit about the OS ie.. Win XP 32 bit or 64 bit) all depending. Also if you didn't get any disk contact the manufacture of the computer or the store you bought it at, or just simply contact Microsoft to see where you can download the driver and how to delete the old one.

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Check in device manager. To do this. 1st right click my computer, 2nd Click properties, 3rd click hardware, 4th click Device manager, 5th check that the computer is seeing the DVD/CD-ROM drives by double clicking the DVD/CD-ROM drives words or click the + symbol next to DVD/CD-ROM drives, the drop down menu will list your device if it’s there. If a device is listed double click the device. If it says it’s working properly click driver in the top bar and uninstall, then re-boot, the system will re-load the driver on re-booting. If the driver was corrupt it will re-install it correctly.If the system cannot find the driver on re-booting it's missing from the systems file, go to the Support Fujitsu site and download and install the driver. Its free all you have to do is put the laptop details in the appropriate boxes and all the drivers for that laptop will be listed.From your description of the error message it’s no doubt a corrupt or missing driver.Hope this helps.

Dear Xu Ling , Its O.S. related problem please try to install this drive on another Computer and i'm sure it will works perfectly. in this case you have to re-install the OS on your Existing Computer, if you wanna use it on your own PC.

Hi, the error code that you have on the CD/DVD drive is a known issue from Microsoft. The error code means "Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (code 39)". Since you are using a Toshiba laptop; you can click on this link http://tinyurl.com/toshibadvd and click on the repair tool on the resolution. This is applicable on both Windows Xp and Vista and will delete the upper/lowerfilters on the registry.

In case that the error code still exist you need to manually delete the upper/lowerfilters under the registry by clicking on this link http://support.microsoft.com/kb/929461/en-us . You need to go the "Run" screen then type in "regedit" and click OK or hit the enter key.

This will surely fix the error code that you have on the CD/DVD drive.